Problem With Self Created Component For Eagle, Net command won't connect

[modern_messiah]

Hi all,

I created my own device in Eagle for the AMC7135 Current Regulator.

Everything went well and the device appears to have been created correctly. I'm now trying to use it to create a circuit. I've placed the device on the work area, and am now in the process of connecting the various parts together. It's a stupidly simple circuit - just 14 of the AMC chips, and 5 solder pads. That's it.

Anyway - using the 'net' command to connect the parts I noticed something odd. The green line matches up perfectly with the existing components in the default library (in this case the SMD wire pads I chose to add as the solder pads), but they will not connect to the pads on the AMC device I created.

I checked my device against pre-existing devices and everything seems correct. I made sure my grid matched the grid that was used when I created the device but this is not the same as a proper connection. When a device connects properly it's clear that it's done so - the joint is seemless. With the correct grid mine still appear to overlap so to speak.

Any idea what I've done wrong? This is the very first time I've used Eagle to create a PCB so I know I will hit more hurdles. Just frustrating it's at the first step!!!

Thanks,

- Matt

[modern_messiah]

...and I think I solved my own problem. Posted too soon it seems.

It looks as if the tutorial I used to create the device left out one VERY important piece of information. When creating the solder pads you need to get your dimensions dead on, so you fiddle with the grid sizing.

However, when you create the schematic device you MUST leave the default grid values. This allows the parts to match up correctly when you place your custom device in the schematic.

Technically it will work if you alter all the grids to match, but then included parts (like resistors etc) will be out and won't connect, so it's best to just leave the defaults where possible.

[MikeGyver]

Easy fix.
You just need to go into the library editor and manually set the position of the pins to a grid (or fairly round) number. Sometimes they'll set like .05 off for some reason, so just double check them as you're adding pins.

[modern_messiah]

Thanks....I guess that's better than my 'workaround'

I do have one more question and hopefully someone who knows what they're doing can help out. Please refer to the following 2 pictures:





I created a small solder pad called 'MINI_PAD'. The 'OUT' pin from TOP_4 is connected to the 'OUT' pin on BOT_4 (both circled). Now I placed the mini_pad on the signal path so that I could force the signal route to a particular place on the board. TOP_4 and BOT_4 are on different sides of the board and are connected with a via. I intend on placing the via where the mini_pad is in the second short of the board view.

Now as you can see the signal path still goes direct to/from each OUT pin to the other, and one shoots off to the mini_pad. I want then to go to each other through the mini_pad.

How can I make this happen? Better yet, is the mini pad even needed? I'm yet to start playing with vias so I have no idea how to include them just yet.

Any assistance would once again be awesome.

Thanks,

- Matt

[gremlinsa]

Manual rougting is the answer here.. Personally i do not use the Auto roughting in Eagle